mirror/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout.git synced 2025-07-14 15:04:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

add next_permutatin, prev_premutation

Browse source
This commit is contained in:
bolero-MURAKAMI 2012-07-25 14:27:01 +09:00
parent e3511d71b0
commit a64938fad0
12 changed files with 668 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

82
sprout/algorithm/fit/next_permutation.hpp Normal file
View file

@ -0,0 +1,82 @@
#ifndef SPROUT_ALGORITHM_FIT_NEXT_PERMUTATION_HPP
#define SPROUT_ALGORITHM_FIT_NEXT_PERMUTATION_HPP
#include <sprout/config.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/algorithm/fixed/next_permutation.hpp>
#include <sprout/algorithm/fit/result_of.hpp>
#include <sprout/sub_array.hpp>
#include <sprout/utility/pair.hpp>
namespace sprout {
namespace fit {
namespace detail {
template<typename Container, typename Permutation>
inline SPROUT_CONSTEXPR sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>
next_permutation_impl_1(
Container const& cont,
Permutation const& perm,
typename sprout::container_traits<Container>::difference_type offset
)
{
return sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>(
sprout::sub_copy(
sprout::get_internal(perm.first),
offset,
offset + sprout::size(cont)
),
perm.second
);
}
template<typename Container, typename Compare>
inline SPROUT_CONSTEXPR sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>
next_permutation_impl(
Container const& cont,
Compare comp,
typename sprout::container_traits<Container>::difference_type offset
)
{
return next_permutation_impl_1(cont, sprout::fixed::next_permutation(cont, comp), offset);
}
} // namespace detail
//
// next_permutation
//
template<typename Container, typename Compare>
inline SPROUT_CONSTEXPR sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>
next_permutation(
Container const& cont,
Compare comp
)
{
return sprout::fit::detail::next_permutation_impl(cont, comp, sprout::internal_begin_offset(cont));
}
namespace detail {
template<typename Container>
inline SPROUT_CONSTEXPR sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>
next_permutation_impl(
Container const& cont,
typename sprout::container_traits<Container>::difference_type offset
)
{
return next_permutation_impl_1(cont, sprout::fixed::next_permutation(cont), offset);
}
} // namespace detail
//
// next_permutation
//
template<typename Container>
inline SPROUT_CONSTEXPR sprout::pair<typename sprout::fit::result_of::algorithm<Container>::type, bool>
next_permutation(
Container const& cont
)
{
return sprout::fit::detail::next_permutation_impl(cont, sprout::internal_begin_offset(cont));
}
} // namespace fit
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIT_NEXT_PERMUTATION_HPP